building told us they were patted down before they were allowed to leave. >> we started clearing the building, and looking for the suspect or a person matching that description that was given to us. did not, did not find anyone matching that description. >> officers gave the all clear just before 8:00. the suspect description was vague and officers say they haven't been able to track the original 911 call. school officials say the large police response was warranted. >> i don't think you can ever call anything to this nature an overreaction in the day and age we live in. any time we receive a possible threat on campus we have to take it seriously. >> reporter: the campus president told us they don't have surveillance cameras but are in the process of tracking them down. reporting live in san jose, matt keller. >>> now to robert honda, he's been talking to students who have been locked down for hours some on their graduation night, robert. >> reporter: that's right, it was supposed to be a night of celebrations or at least that was the plan. the scene of police officers and s.w.a.

by floor and we've seen the light kind of giving us an indication of where the search has been going. now, if you can see, we just a few minutes ago the lights came on on the top floor and, again, the students and faculty that were inside during the lockdown were told to keep their lights off and the blinds closed so any kind of light like that probably indicates that the police are up there and conducting their search in that area. i will say that the police officers coming in and out of the building seem very calm. no one is rushing in and out so the light at the top of the floor could be a good indication that the search is, you know, well underway on what might be the final floor of this building. we've been talking to students as they come out of the campus area and, again, as we said before, it's more of a partial lockdown now. one of the students who was in the tech building before said there was probably maybe 100 the 200 students in the whole building at one time mainly because it's finals week and they thought there were mainly about 60 people on the floor that he was on so it w

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